Often fatal blow delivered in tropics? (7)

I believe the answer is:

typhoon

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'often fatal blow' is the definition.
'typhoon' can be an answer for 'blow' (I have seen 'severe blow' mean 'typhoon' so perhaps 'blow' could also mean 'typhoon'). I'm not sure about the 'often fatal' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for typhoon that I've seen before include "Cyclonic sea storm" , "Violent cyclonic storm" , "severe blow" , "Eastern tropical storm" , "Tropical cyclone" .)

I've seen this clue in The Sun.

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